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Your search keyword '"Laimon, M."' showing total 5 results
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5 results on '"Laimon, M."'

4. Sugarcane Biomass as a Source of Biofuel for Internal Combustion Engines (Ethanol and Acetone-Butanol-Ethanol): A Review of Economic Challenges

Author

Algayyim, SJM, Yusaf, T, Hamza, NH, Wandel, AP, Fattah, IMR, Laimon, M, and Rahman, SMA

Subjects
02 Physical Sciences, 09 Engineering
Abstract

The objective of this review is to provide a deep overview of liquid biofuels produced from sugarcane bagasse and to address the economic challenges of an ethanol and acetone-butanol-ethanol blend in commercial processes. The chemistry of sugarcane bagasse is presented. Pretreatment technologies such as physical, chemical pretreatment, biological, and combination pretreatments used in the fermentation process are also provided and summarised. Different types of anaerobic bacteria Clostridia (yeast) are discussed to identify the ingredient best suited for sugarcane bagasse, which can assist the industry in commercializing ethanol and acetone-butanol-ethanol biofuel from biomass sugarcane. The use of an acetone-butanol-ethanol mixture and ethanol blend in internal combustion engines is also discussed. The literature then supports the proposal of the best operating conditions for fermentation to enhance ethanol and acetone-butanol-ethanol plant efficiency in the sugar waste industry and its application in internal combustion engines.

Published
2022

5. Late intestinal obstruction after radical cystectomy and urinary diversion: urological and oncological perspectives.

Author

El-Hefnawy AS, Helmy T, Laimon M, El-Halwagy S, and Abol-Enein H

Subjects
Adult, Aged, Anastomotic Leak etiology, Anastomotic Leak surgery, Colon surgery, Conservative Treatment, Disease-Free Survival, Female, Humans, Ileum surgery, Intestinal Obstruction therapy, Male, Middle Aged, Reoperation, Retrospective Studies, Surgically-Created Structures, Survival Rate, Urinary Bladder Neoplasms complications, Urinary Diversion methods, Cystectomy adverse effects, Intestinal Obstruction etiology, Palliative Care, Urinary Bladder Neoplasms surgery, Urinary Diversion adverse effects
Abstract

Objective: The aim of this study was to review different management modalities and outcome of patients presenting with late intestinal obstruction (IO) after radical cystectomy (RC) or palliative cystectomy (PC)., Materials and Methods: Files of patients who presented with IO between January 1978 and June 2014 were reviewed. Patients who developed IO following either RC or PC more than 30 days after surgery were included. Patients' characteristics and management protocols were evaluated. Predictors for failure of conservative management and unfavorable outcome after surgical explorations were evaluated. Symptom-free and overall survival rates of patients with malignant IO was were recorded., Results: The prevalence of IO was 2.8% after RC (118 out of 4199 patients) and 10% after PC (nine out of 87). Colonic diversions had the highest prevalence (6.2%), followed by ileal loop conduit (2.9%); the lowest prevalences followed Kock pouch and ileal W neobladder (1.7% and 1.6%, respectively). Postoperative urinary leakage from a ureteroenteric anastomosis was the only predictor for surgical intervention (p = 0.039). Nine cases had been explored for malignant obstruction (eight after RC and one after PC). The mean ± SD elapsed time before death was 3.6 ± 2 months (range 0.5-17 months)., Conclusions: Urinary diversion with colonic segments carries more risk for the development of IO in comparison with ileal segments. Postoperative urinary leakage after cystectomy and urinary diversion may be a contributory factor for surgical exploration in cases with late IO.

Published
2016
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